Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

MatchKings ~ Accurate?

 
LinkBack Thread Tools Display Modes
  #1  
Old 06-23-2003, 02:04 AM
Junior Member
 
Join Date: Jun 2003
Location: BC, Canada
Posts: 14
MatchKings ~ Accurate?

Hello all, this is my first post. I'll start out by saying I'm not a real long range shooter, nor do I claim I am. Anyways, to my question.

I shoot a Remington 700 stainless mtn. rifle in 260 Rem. My scope is a Bushnell Elite 3200 5-15X40mm. It is not scary accurate, but I'd say good for a factory rifle, MOA or less with favoured ammo. OK, today I shot some handloads with the Sierra 120 gr. HPBT MK, BC .409. Above 37 grs. RL15, touching the lands, I got an average of 1.65" for three groups of 3 shots each at 100 yards. This isn't really too good, for a match bullet.

What should I do to improve this?

With 120 gr. Nosler BT's, it will go well below MOA. I tried it at 330yards, and got one group of 4.36", and another of 1.99". I then proceeded to hit a 8X8" steel gong with all of my last 4 shots. Velocity of this load is a chrony'd 2645 fps, and it is hitting just above point of aim at 330 yards.

Should I try a diff. powder, or seating depth? Looking for some help to shrink these groups.

[ 06-23-2003: Message edited by: todbartell ]
__________________
[i]Rock you like a Hurricane</I]
Reply With Quote
  #2  
Old 06-23-2003, 04:26 AM
Platinum Member
 
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: MatchKings ~ Accurate?

What kind of load development have you done with that powder yet, or have you just worked with a load or two using it so far?

Also, how long do you wait and let the bbl cool between shots when testing accuracy of your loads with that light weight barrel?

I was going to get the 260 for my daughter, got the M7 in 243 instead, figured for her, it would shoot the lighter bullets and heavy enough ones too.
__________________
Brent Moffitt
Reply With Quote
  #3  
Old 06-23-2003, 08:12 AM
Bronze Member
 
Join Date: May 2002
Location: N/A
Posts: 64
Re: MatchKings ~ Accurate?

Try RL-19 with a Federal 210 M primer. If you have a new edition of the Sierra Manual use that for reference. Also the Nosler manaul lists RL-19 as the most accurate powder they tested with the 120 gr. BT and the 125 Partition. Try the 120 MK at .003 to .005 off the lands. In my rifle it is too long to work through the magazine but shoots in the .3's.

I just developed a load for another shooter to hunt deer with using the 120 Sierra Pro Hunter. It shot very well at 2912 avg. fps. from his 23" barrel using RL-19. I have also used IMR 4064 with this bullet. It's not quite as accurate as RL-19 but still sub MOA the velocity averages 2993 fps out my 24" tube.

Currently I am working on a load for my 260 long range rifle using the Lapua 123 gr. Scenar. (B.C. of .547) I am using RL-19 with it as well. At 46.9 gr. it is averageing 2951 fps with std. dev. consistently in the single digits. Still tweaking bullet seating depth as it is double grouping right now in the mid .5's. Hope this helps some. Welcome aboard, glad to see you made it over from Accurate Reloading. There is a lot great information available on this site, from very knowledgeable shooters! Enjoy your stay!
__________________
Shoot Safe, Shoot Straight..RiverRat
Reply With Quote
  #4  
Old 06-24-2003, 02:36 AM
Junior Member
 
Join Date: Jun 2003
Location: BC, Canada
Posts: 14
Re: MatchKings ~ Accurate?

I have used this RL15 powder in my 260 Rem for 100 gr. bullets. With the 100 gr. Nosler Ballistic Tip bullet, I could get pretty good groups, 1" or less. This is the first time I've tried it with a 120 gr. bullet.

Yes, my barrel is quite slender. I let it get almost cool, just slightly warm to the touch. I fire 3 shots within 2 minutes for my group. But it is often my first or second shot that is off.

I have tried RL19 with this bullet last summer. Seated .030" off the lands, I got a 5 shot group of 1.5". CCI BR-2 primers is what I used. I have since run out of RL19. Just sort of using up what powders I got left.

So, this morning, I loaded up 20 more MatchKings. I have a little Winchester WXR left, the only slow burner I got other than 7828. 49.5 grs. gave me 2909 fps avg. for 10 shots. ES was 57 fps, AD was 14 fps. Bullet was seated .030" off the lands. Accuracy was no better than my previous RL15 load. [img]images/icons/frown.gif[/img]

My first three groups of 3 shots went into 2.17", 1.55", & 1.13". In all three, there would be 2 holes within .8", then a flyer. But not always would the 3rd shot spoil the group. [img]images/icons/confused.gif[/img] I then backed off again to 335 yards, tried two more groups. First one went into 2.92" (not bad), second was a wide 6.38". Used my last 4 shots to blast 4 2L Coke bottles filled with water. 3 out of the 4 were knocked down. Upon inspection, I hit all 3, dead center. Can't believe that! The one that didn't fall was hit high, a little below the neck. Just lost the water up to the hole. Hey, about the holes in the bottles. They all had 26 cal entrance, and 2-3" vertical splits in the back. Not much expansion, even when hitting at almost 2200 fps. [img]images/icons/confused.gif[/img]

I'm almost out of these 120 gr. MK's. I got like 18 or so. Any suggestions? Here are the powders I got - RL15, Varget, H4895, WXR, and IMR 7828. What about seating depth?

Looking to salvage a decent load with this last stab at the box of MK's. [img]images/icons/frown.gif[/img]

P.S., the wind was very light tonight, and I also did set my AO for the range I am shooting at.

[ 06-24-2003: Message edited by: todbartell ]
__________________
[i]Rock you like a Hurricane</I]
Reply With Quote
  #5  
Old 06-24-2003, 02:29 PM
Bronze Member
 
Join Date: May 2002
Location: N/A
Posts: 64
Re: MatchKings ~ Accurate?

Kind of surprised that RL-19 didn't work too well with the 120 MK. I know of two other rifles besides mine that likes that powder bullet combination. I have looked in the 5th edition of the Sierra manual, and of the powders you have Varget is the only other powder that you haven't tried that they list loads for with the 120 MK.

120 Match King
Rem. Brass
Rem. 9 1/2 primer
Varget starting load: 34.0 gr.= 2600 fps
Varget maximum load: 40.4 gr.= 2900 fps

Hope this helps, you might try different seating depth changes as well. Sierra tech support has told me that the 120 MK doesn't mind jumping to the rifling so you might try that as well. If not you might try the 123 gr. Laupa Scenar. It has a lot better B.C. than the Sierra.
__________________
Shoot Safe, Shoot Straight..RiverRat
Reply With Quote
  #6  
Old 06-25-2003, 12:01 AM
Junior Member
 
Join Date: Jun 2003
Location: BC, Canada
Posts: 14
Re: MatchKings ~ Accurate?

Actually, that RL19 load was better than I'm doing now. That was 5 shots with RL19 that are going as tight as my 3 shot groups now. [img]images/icons/frown.gif[/img]

I've shot the 120 gr. MK with Varget, but didn't record the group size, only the speed. So I will try it. I've been shooting lately with the laminate stock, but I will switch to my lightweight fiberglass stock, see if that helps. It was supposed to be off to get painted, but I will wait a bit longer now. It has showed to be an accurate platform for my 260 before, but my laminate has too. The laminate weighs 17 ozs. more, and I've found it is much more stable to shoot from the bench. But, I'll hunker down and try the fiberglass.

Thanks for the load data. I will load some up with Varget tommorow. Maybe try them seated .020" off. I remember getting 2765 fps with 39.5 grs. last winter, but the accuracy of the load is forgotten.

I did notice some wind drift with the 120 gr. MK when the wind was blowing at 335 yards. BC is .409. Lapua 123 gr. is like .547, that is some difference!

I'll report back with the Varget results by tommorow hopefully.
__________________
[i]Rock you like a Hurricane</I]
Reply With Quote
  #7  
Old 06-25-2003, 09:30 AM
 
Posts: n/a
Re: MatchKings ~ Accurate?

todbartell,
This seems ironic to me that you would ask advise about things that "require zero to little talent" if my memory serves me right. [img]images/icons/grin.gif[/img]
I would try either of the 4350 powders in that caliber. About .003 off. to start. Win. or 210 prim. Just a suggestion.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: MatchKings ~ Accurate?
Thread Thread Starter Forum Replies Last Post
7mm Matchkings pistol Reloading Equipment and Components 4 01-10-2010 08:08 AM
Help, need matchkings! Bigcat_hunter General Discussion 3 05-16-2008 12:04 PM
338 rum 250 matchkings jax338 Reloading 1 05-16-2006 12:58 PM
.277 matchkings? jax338 Rifles, Bullets, Barrels and Ballistics 6 11-16-2005 10:02 AM
Sierra Matchkings on game thread on Accurate Reloading Dave King Rifles, Bullets, Barrels and Ballistics 26 01-05-2002 09:14 PM


All times are GMT -5. The time now is 03:39 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC